Believing it to be true does not make it true, in and of itself. I believe in the things I've seen, because I have seen them for myself. That's a personal and subjective thing, though. I cannot expect others to believe them outright, because they have not experienced them. To be put it another way, I'm just not an absolutist when it comes to my beliefs. I'm a relativist. I know that beliefs are not objective; they're opinions. I don't think others are wrong just for not holding the same opinion as me. That would be really arrogant and juvenile.